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A kind of solar battery backboard waste film and its leftover material reutilization method

A technology of solar cells and leftover materials, which is applied in the field of plastic resource recycling, can solve the problems of being unable to be incinerated and landfilled, having no commercial application value, and low mechanical properties of materials, so as to save non-renewable resources and solve compatibility problems. Good, cost-effective effect

Active Publication Date: 2021-09-07
杭州福禧新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, solar battery backsheets on the market are mainly made of fluorine-containing materials and polyethylene terephthalate (PET), which are glued layer by layer. Due to the gap between PET and PVDF and other fluorine-containing resins in solar waste films Thermodynamically incompatible, so the mechanical properties of the material obtained after regeneration of the waste film of the solar cell backplane are low, and have no commercial application value
At the same time, the waste film of the solar battery backplane is a polymer material containing fluorine, which cannot be incinerated or simply landfilled.
The waste film of the solar battery backplane can only be piled up in the warehouse of the production enterprise or the dismantling enterprise, taking up a lot of space, which has become an industry problem

Method used

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  • A kind of solar battery backboard waste film and its leftover material reutilization method
  • A kind of solar battery backboard waste film and its leftover material reutilization method

Examples

Experimental program
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Effect test

Embodiment 1

[0035]Get 87.5g of crushed and dried solar cell backplane waste film fragments, 10g of ethylene-vinyl acetate copolymer (EVA), 1g of MMA-GMA-St, 0.5g of antioxidant 1010 and 1g of calcium stearate into a mixer and mix Uniform, then added to the twin-screw extruder for blending, the temperature of each zone of the screw from the feed port to the head is 200°C, 230°C, 240°C, 250°C, 240°C, 245°C, 250°C, 245°C , 245°C, 250°C, screw speed 300rpm, react the recycled solar cell backsheet waste film fragments with ethylene-vinyl acetate and high-efficiency compatibilizer, then extrude and cool, and pelletize to prepare alloy materials.

Embodiment 2

[0037] Get 85.5g pulverized and dried solar battery backplane waste film fragments, 8g ethylene-vinyl acetate copolymer (EVA), 5gMMA-GMA-St, 0.5g antioxidant 1010 and 1g calcium stearate drop into mixer Mix evenly, then add to the twin-screw extruder for blending, the temperature of each zone of the screw from the feeding port to the machine head is 200°C, 230°C, 240°C, 250°C, 240°C, 245°C, 250°C, 245°C ℃, 245℃, 250℃, screw speed 300rpm, make the recycled solar battery back sheet waste film fragments react with ethylene-vinyl acetate and high-efficiency compatibilizer, then extrude and cool, and pelletize to prepare the alloy material .

Embodiment 3

[0039] Get 82.5g pulverized and dried solar cell backplane waste film fragments, 8g ethylene-vinyl acetate copolymer (EVA), 8gMMA-GMA-St, 0.5g antioxidant 1010 and 1g calcium stearate drop into mixer Mix evenly, then add to the twin-screw extruder for blending, the temperature of each zone of the screw from the feeding port to the machine head is 200°C, 230°C, 240°C, 250°C, 240°C, 245°C, 250°C, 245°C ℃, 245℃, 250℃, screw speed 300rpm, make the recycled solar battery back sheet waste film fragments react with ethylene-vinyl acetate and high-efficiency compatibilizer, then extrude and cool, and pelletize to prepare the alloy material .

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Abstract

The invention discloses a method for reusing the waste film of a solar cell backboard and its leftover materials. In the method, the crushed solar cell backboard waste film, ethylene-vinyl acetate copolymer (EVA) and a high-efficiency compatibilizer are added into a melt blending device to melt and extrude to prepare a novel alloy material. The invention solves the industrial problems of the manufacturers of the solar battery backplane and its upstream backplane film, turns the waste of the waste film of the solar battery backplane in the solar battery industry into treasure, truly realizes the recycling and reuse of resources, and saves non-renewable resources, energy saving and environmental protection.

Description

technical field [0001] The invention belongs to the field of plastic resource recycling, and in particular relates to a method for reusing waste film of a solar battery backplane and its scraps, in particular to a new type of alloy prepared by melting and blending waste films of a solar battery backplane and its scraps with a high-efficiency compatibilizer material method. Background technique [0002] my country is a big producer and consumer of solar cell backplane film. In the production process of backsheet film, limited by the process, the finished product rate of solar cell backsheet can reach 90-95%, and there must be 5-10% leftovers to be discarded. At the same time, a large number of solar battery backplanes are damaged or scrapped every year, and waste films that cannot be processed are constantly produced. It is estimated that the total amount of waste film is tens of thousands of tons per year, and it is still growing. At present, solar battery backsheets on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L27/16C08L23/08C08L25/14C08L33/08C08L33/14
CPCC08L27/16C08L67/02C08L2205/035C08L2207/20C08L23/0853C08L25/14C08L33/068C08L33/14
Inventor 顾方明赵黎李剑春
Owner 杭州福禧新材料有限公司
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